129+ Number Series Questions and Answers

Q:

What will come in place of the question mark (?) in the following number series?

18, 29, 42, 53, ?,77

A) 66	B) 64
C) 71	D) 65

Answer & Explanation Answer: A) 66

Explanation:

Given number series - 18, 29, 42, 53, ?, 77

The pattern is as follows - 18 + 11 = 29 29 + 13 = 42

42 + 11 = 53

53 + 13 = 66

66 + 11 = 77

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1 11751

Q:

Choose the correct alternative that will continue the same pattern and replace 'x' in series 4,9,25,x,121,169,289,361

A) 81	B) 36
C) 64	D) 49

Answer & Explanation Answer: D) 49

Explanation:

The given series consists of squares of consecutive prime numbers
2*2, 3*3, 5*5, . . . . , 11*11, 13*13, 17*17

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39 11463

Q:

Which number will complete the series?

0,1,4,15,?,325,1956

A) 60	B) 64
C) 75	D) 80

Answer & Explanation Answer: B) 64

Explanation:

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Filed Under: Number Series
Exam Prep: CAT

18 11357

Q:

In the following question, select the missing number from the given series.

13, 19, 32, 51, 83, ?

A) 142	B) 134
C) 156	D) 140

Answer & Explanation Answer: B) 134

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

9 10910

Q:

Find the odd man out of the series 888, 440, 216, 104, 48, 22, 6 ?

A) 104	B) 48
C) 22	D) 216

Answer & Explanation Answer: C) 22

Explanation:

In the given series,

2nd term = $\frac{1 s t t e r m - 8}{2} = \frac{888 - 8}{2} = 440$

3rd term = $\frac{2 n d t e r m - 8}{2} = \frac{440 - 8}{2} = 216$

and so on...

Here 6th term = $\frac{5 t h t e r m - 8}{2} = \frac{48 - 8}{2} = 20$

Therefore, 22 is wrong.

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Filed Under: Number Series
Exam Prep: Bank Exams
Job Role: Bank Clerk

26 10808

Q:

Choose the missing terms out of the given alternatives Y, B, T, G, O, ?

A) M	B) N
C) K	D) L

Answer & Explanation Answer: D) L

Explanation:

The given sequence is a combination of two series:
i.)Y,T, O and ii.)B, G, ?
i. consists of 2nd, 7th, 12th letters from end of English alphabet,while
ii. consists of 2nd, 7th, 12th letters from beginning of English alphabet
So, the missing letter in ii.) is the 12th letter from the beginning of English alphabet,which is L.

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25 10768

Q:

Which number will complete the series?

63, 72, 81, 90, ____, 108

A) 80	B) 99
C) 100	D) 117

Answer & Explanation Answer: B) 99

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

2 10717

Q:

In the following question, select the missing number from the given series.

10, 12, 14, 16, 18, ?

A) 22	B) 24
C) 20	D) 26

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